Mitosis and Meiosis

The cell has to copy everything it contains so that when it splits in half, the two new cells will contain the right amount of material.

The number of organelles increases during cell growth.

The chromosomes are copied, so that the cell has two copies of its DNA.

Mitosis is the type of cell division that occurs in most of the cells in your body. I remember it by thinking of 'Mitosis happens in my toesies'. Meiosis only occurs in your reproductive organs (so either in your ovaries or in your testes).

Mitosis and Meiosis: Cell cycle

1) The molecule of DNA splits

2) Bases on free-floating nuleotides pair up with matching bases on the DNA

3) Cross links form between the bases and the old DNA strands, and the nucleotides are joined together. So two molecules identical to the original…